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United States Patent | 6,041,857 |
Carmody ,   et al. | March 28, 2000 |
Several motor driven embodiments are discussed which provide linear motion to a downhole flow control device. The embodiments employ ball screw assemblies or lead screw assemblies. A device for rotational actuation of a downhole flow control device is also disclosed.
Inventors: | Carmody; Michael A. (Houston, TX); Jones; Kevin R. (Humble, TX); Coon; Robert J. (Houston, TX); Murray; Douglas J. (Humble, TX); Hopmann; Mark E. (Alvin, TX); Jennings; Steven L. (Friendswood, TX); Welch; Wayne (Houston, TX); Edwards; Jeffry (Friendswood, TX); Martin; David (Houston, TX) |
Assignee: | Baker Hughes Incorporated (Houston, TX) |
Appl. No.: | 930668 |
Filed: | October 14, 1997 |
PCT Filed: | February 14, 1997 |
PCT NO: | PCT/US97/02334 |
371 Date: | October 14, 1997 |
102(e) Date: | October 14, 1997 |
PCT PUB.NO.: | WO97/30269 |
PCT PUB. Date: | August 21, 1997 |
Current U.S. Class: | 166/66.4; 166/324; 166/332.2; 166/386 |
Intern'l Class: | E21B 004/04; E21B 033/12 |
Field of Search: | 166/66.4,66.5,53,64,65.1,66.6,319,386,321,324,330,332.2,332.4 175/40 |
4715440 | Dec., 1987 | Boxell et al. | 166/100. |
5220963 | Jun., 1993 | Patton | 175/45. |
5234057 | Aug., 1993 | Schultz et al. | 166/53. |
5343963 | Sep., 1994 | Bouldin et al. | 175/40. |